Rated 4 out of 5 stars

Great add-on, compatible with Fx 4.0.*But it manage Fx's add-ons like it in Fx 3.6.*. However, Fx 4. manage add-ons in a new style. So when I install new add-on in All-in-one sidebar, it can be downloaded but can't be installed.

Vertical Toolbar maybe see it ,so it let Fx 4 manage add-ons itself.

This review is for a previous version of the add-on (0.7.13.1-signed).